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Cheap flights from Australia to Illinois from $705

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/2. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
15 Jan — 22 Jan1
1 adult

Cheap flight deals from Australia to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Australia (AU0) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 January 2025.

Round-trip from

$1,107

One-way from

$705
Qantas Airways
  • Qantas Airways
  • 5/2-19/2
  • 2 total stops
  • 65h 56m total
  • Australia to Illinois
Search Deals
17/2
  • 17/2
  • 1 total stop
  • 22h 56m total
  • Australia to Illinois
Search Deals

Find flight deals from Australia to Illinois

Cheapest flights from Australia to Illinois
Explore the most affordable flight options available from Australia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 January 2025.

Mon 28/409:10SYD - ORD
1 stop21h 46mQantas Airways
Mon 26/518:50ORD - SYD
1 stop21h 15mQantas Airways
Deal found 8/1$1,105
Wed 5/222:00BNE - ORD
1 stop37h 31mQantas Airways
Wed 19/208:35ORD - BNE
1 stop28h 25mQantas Airways
Deal found 9/1$1,107
Wed 5/206:10BNE - ORD
2 stops27h 35mMultiple Airlines
Wed 19/214:13ORD - BNE
1 stop22h 47mMultiple Airlines
Deal found 9/1$1,276
Thu 6/206:20SYD - ORD
2 stops52h 25mMultiple Airlines
Sat 15/208:35ORD - SYD
1 stop31h 25mMultiple Airlines
Deal found 8/1$1,276
Sat 1/206:15ADL - ORD
2 stops26h 14mMultiple Airlines
Fri 28/220:25ORD - ADL
2 stops56h 55mMultiple Airlines
Deal found 10/1$1,473
Fri 7/210:45BNE - STL
2 stops42h 03mAir Canada
Fri 14/215:50STL - BNE
2 stops48h 50mAir Canada
Deal found 8/1$1,576
Mon 18/812:55ADL - ORD
2 stops25h 32mQantas Airways
Thu 4/917:05ORD - ADL
2 stops26h 45mQantas Airways
Deal found 9/1$1,612
Thu 13/311:30MEL - ORD
2 stops28h 29mMultiple Airlines
Tue 25/308:15ORD - MEL
1 stop31h 20mMultiple Airlines
Deal found 9/1$1,618
Fri 6/606:00MEL - ORD
2 stops26h 28mQantas Airways
Mon 1/1217:00ORD - MEL
2 stops26h 35mQantas Airways
Deal found 9/1$1,623
Sat 2/809:45BNE - ORD
2 stops28h 00mAir New Zealand
Mon 25/815:51ORD - BNE
2 stops28h 09mAir New Zealand
Deal found 8/1$1,686
Thu 20/310:20SYD - ORD
2 stops37h 37mAir Canada
Sun 23/311:35ORD - SYD
2 stops29h 00mAir Canada
Deal found 10/1$1,717
Wed 5/210:45BNE - ORD
2 stops22h 06mAir Canada
Wed 19/216:00ORD - BNE
2 stops48h 40mAir Canada
Deal found 9/1$1,755

Find flights from Australia to Illinois within your budget

Customise your flight search to find flights from Australia to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 10 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 28/4

09:10-15:56

1 stop21h 46m

Chicago O'Hare Intl

Mon 26/5

18:50-07:05

1 stop21h 15m

$1,105

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 5/2

22:00-19:31

1 stop37h 31m

Chicago O'Hare Intl

Wed 19/2

08:35-05:00

1 stop28h 25m

$1,107

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Wed 5/2

06:10-17:45

2 stops27h 35m

Chicago O'Hare Intl

Wed 19/2

14:13-05:00

1 stop22h 47m

$1,276

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 6/2

06:20-17:45

2 stops52h 25m

Chicago O'Hare Intl

Sat 15/2

08:35-09:00

1 stop31h 25m

$1,276

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Sat 1/2

06:15-15:59

2 stops26h 14m

Chicago O'Hare Intl

Fri 28/2

20:25-21:50

2 stops56h 55m

$1,473

BrisbaneSt. Louis

BNE - STL

BNESTL

Brisbane

Fri 7/2

10:45-12:48

2 stops42h 03m

Lambert-St Louis

Fri 14/2

15:50-08:40

2 stops48h 50m

$1,576

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Thu 13/3

11:30-23:59

2 stops28h 29m

Chicago O'Hare Intl

Tue 25/3

08:15-07:35

1 stop31h 20m

$1,618

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 6/6

06:00-17:28

2 stops26h 28m

Chicago O'Hare Intl

Mon 1/12

17:00-12:35

2 stops26h 35m

$1,623

AdelaideChicago

ADL - ORD

ADLORD

Adelaide

Wed 5/2

06:00-15:59

2 stops26h 29m

Chicago O'Hare Intl

Wed 12/2

14:14-12:55

2 stops30h 11m

$1,660

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 20/3

10:20-07:57

2 stops37h 37m

Chicago O'Hare Intl

Sun 23/3

11:35-08:35

2 stops29h 00m

$1,717

Flights are sorted by cheapest return flights first.

Deals found on 9/1

Showing 1-10 of 60 results
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Best time to book a flight from Australia to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Australia with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Australia to Illinois

Get recent, data-driven insights about flights from Australia to Illinois including ideal travel times, pricing trends, and more.

What is the cheapest time of day to fly from AU to IL?

Find hourly flight availability from Australia to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 January 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Australia to Illinois as you normally would.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 10 January 2025.
Get a feel of what it's like to fly with Cathay Pacific, Air Tahiti Nui and American Airlines from Australia to Illinois by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Comfort

8.1

Food

7.8

Boarding

8.7

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui
8.8
Very Good
62 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Comfort

8.1

Food

7.8

Boarding

8.7

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Korean Air
8.5
Very Good
1,030 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Comfort

8.1

Food

7.8

Boarding

8.7

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

ANA
8.4
Very Good
837 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Comfort

8.1

Food

7.8

Boarding

8.7

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Japan Airlines
8.3
Very Good
1,446 reviews